[CentOS] Low End NAS hardware.

Hey,
The recent discussion on NAS/SAN and the Thecus N8800 got me to thinking.
Bit of background. I have an old Dual Athlon MP2800+ that I'm using
for a home web/file server. It runs fine but between the noise of the
various fans and it's location in the living room, I've been asked by
my spouse to find a replacement for it that's smaller & quieter.
Looking at the Thecus, and based on experience with Atom based
Mini-ITX systems at work, I was thinking about rolling my own.
My questions is, for a small home server that runs apache/php/mysql
and Samba, how well do the Mini-ITX boards like the VIA C3/7 & Intel
Atoms handle this sort of task? I've used VIA systems as MythTV
frontends but never as file/web servers. I'd expect they'd do fine for
home use but I've never tried.
Thanks,
--
Drew
"Nothing in life is to be feared. It is only to be understood."
--Marie Curie